Well I've started my duel disk prop and once its all painted and finished id like to engrave it or atleast do something to it that will give it an "engraved" look.
What tool could I use to do just that? And could I use the same way to engrave armor?

When you want something engraved, you generally do it before painting. You can just paint the lines in place by mixing the paint you used as the basecoat with a bit of a darker gray. This looks fine from a distance, but is noticeable up close.

Normally you would get this effect by using a Dremel rotary tool with a small cylindrical diamond cutting tip and the depth setter attachment. With rigid surfaces, such as wood or plaster, you can use chisels or gravers.

Another possibility is to make the surface using pieces of something like craft foam, and you just attach them to a base in such a way that there is a small gap everywhere you want those lines to show up.

My apologies guys for the broken link. I don't know why, but sometimes I put a reference pic and my browser displays it perfectly and when I submit a thread the link ends up being broken so it doesn't display for some strange reason...

@ JasonTerror and Millions_Knives:
Well my prop is currently made out poster board, to use as stencils when I buy craft foam, so basically the materials will be paper mache/craft foam (one minor part will be made out paper mache; the little oval thing that holds the "wings")

@ verdatum:
So basically I should do the "engraving" part before I paint it?

you may want to look into leather embossing tools (warm them a bit for craft foam)

maybe wood burning tool but thats a bit more difficult

~should make a vid on these tricks, dont have any yet~

Well actually I was thinking of going with the first suggestion that verdatum had suggested, i'm pretty sure it won't look too bad, especially since this is my first prop . But thank you for the tip! ^^

Million knives is correct about the craft foam. The craft foam would likely just melt and gum up the bit. You can emboss craft foam with any metal tool heated up. This doesn't give exactly the same effect as engraving (the edges aren't as sharp) but it's pretty close.

To clarify my previous comment, if you choose to just paint the lines on, then paint them after painting the basecoat. You might want to read a bit about pinstriping techniques to get really good straight lines. (If Google gives you nothing, and you want to go with this technique, I can do a writeup of what I know)

Regarding the broken link, zerochan does this on purpose so that people link to their website, and not directly to their images. But the way this is enforced, as you saw, it looks just fine on your machine when you grab the link, since you've already been to the site, but it fails for anyone who hasn't.

you can dremmel on Craft foam, but you need to use a very slow speed and a very dull sander, there are speed controls made for routers that will slow you down, and most of the bits made for sharpening metal will be dull enough. the larger the grit the more it will bite into the foam. That is what you want to avoid, you're pretty much needing to burnish the engraving into foam. check out bioweapons.com he has a lot of information on foam builds.

I would suggest investing in a dremmel since for Mache a regular sander bit will work.

Million knives is correct about the craft foam. The craft foam would likely just melt and gum up the bit. You can emboss craft foam with any metal tool heated up. This doesn't give exactly the same effect as engraving (the edges aren't as sharp) but it's pretty close.

To clarify my previous comment, if you choose to just paint the lines on, then paint them after painting the basecoat. You might want to read a bit about pinstriping techniques to get really good straight lines. (If Google gives you nothing, and you want to go with this technique, I can do a writeup of what I know)

Regarding the broken link, zerochan does this on purpose so that people link to their website, and not directly to their images. But the way this is enforced, as you saw, it looks just fine on your machine when you grab the link, since you've already been to the site, but it fails for anyone who hasn't.

Sorry about the late reply guys! But thank you for your input.
Also kk ill keep that in mind